Dual valve apparatus for aircraft engine ice protection and related methods
AssigneeThe Boeing Company
InventorsOlubusola Anthony Dasilva, Heath Alan Conn, Erik Marc Langhofer, Hosam El Din El-Gabalawy, Joseph M. DiRusso
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Abstract
A thermal anti-ice system in an aircraft. A controlled valve receives air from a compressor bleed port of an engine of the aircraft. A self-regulating valve is fluidly connected between the controlled valve and an inlet of the engine. A first pressure sensor senses pressure between the valves. A second pressure sensor senses pressure between the self-regulating valve and the inlet. The system can be used to de-ice aircraft inlet lip skins made of composite materials that have comparatively lower design temperatures than other comparable materials.
Claims28
A thermal anti-ice system in an aircraft comprising:
- a controlled valve configured to receive air from a compressor bleed port of an engine of the aircraft;
- a self-regulating valve fluidly connected between the controlled valve and an inlet of the engine;
- a first pressure sensor configured to sense pressure between the valves;
- and
- a second pressure sensor configured to sense pressure between the self-regulating valve and the inlet.
A thermal anti-ice system in an aircraft comprising:
- a controlled valve configured to receive air from a compressor bleed port of an engine of the aircraft;
- a self-regulating valve in series with the controlled valve and through which air travels from the controlled valve to an inlet of the engine;
- a first pressure sensor configured to sense pressure between the valves;
- and
- a second pressure sensor configured to sense pressure between the self-regulating valve and the inlet;
- the pressure sensors configured to provide values for evaluating performance of the valves.
A control-module-performed method of providing thermal anti-icing in an aircraft, the method comprising:
- controlling a valve that receives air from a compressor bleed port of an engine of the aircraft and is fluidly connected with an inlet of the engine through a self-regulating valve;
- receiving a first input representing pressure in a fluid connection between the controlled valve and the self-regulating valve;
- receiving a second input representing pressure in a fluid connection between the self-regulating valve and the inlet;
- the controlling performed based on the first and second inputs.
Dependencies are inferred from the claim text.